MTL - My Lord is A Stone - Chapter 18

Ning Bei worked hard to get into Lincheng University and came to the city Nan Xia was in. Nan Xia introduced him to others as: “Her younger brother.”

After returning home, Ning Bei was lying on the floor like a stray dog.

His brother Ning Nan couldn’t look at his depressed face anymore, so he gave him a kick: “Now you know that acting like a dog will end badly?”

Ning Bei closed his eyes, and said in a cold voice, “Never again.”

Ning Nan chuckled and was about to leave when the exclusive ringtone that Ning Bei set for Nan Xia suddenly rang in the room.

Under Ning Nan’s fiery gaze, Ning Bei lay on the ground for one extra second.

Then he quickly got up from the ground and ran to the phone.

Ning Nan: ?

Ning Bei: Scram.

- Description from Novelupdates

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

I was proposed to by the Final Boss.